2a thread class right-hand 0.400" thread length pan head style 20 thread quantity per inch screw machine pan head, cross recessed brass, unc-2a cadmium screw surface treated unc thread series
3a thread class right-hand 0.345" thread length dished hexagon head style 0.115" grip length 32 thread quantity per inch bolt tension hex head close tolerance alloy steel long thread reduced major diameter self locking cadmium surface treated unjf thread series
3a thread class right-hand 0.528" thread length dished hexagon head style 2.375" grip length 20 thread quantity per inch bolt tension hex head close tolerance alloy steel short thread reduced major thread diameter self locking cadmium surface treated unjf thread series
2a thread class right-hand 0.312" thread length pan head style 48 thread quantity per inch screw machine pan head cross recessed carbon steel cadium plated unf-2a cadmium screw surface treated unf thread series